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Self-Sustaining Bioelectrochemical Cell from Fungal Degradation of Lignin-Rich Agrowaste

Author

Listed:
  • Asiah Sukri

    (Faculty of Engineering, International Islamic University Malaysia, P.O. Box 10, Kuala Lumpur 50728, Malaysia)

  • Raihan Othman

    (Faculty of Engineering, International Islamic University Malaysia, P.O. Box 10, Kuala Lumpur 50728, Malaysia)

  • Firdaus Abd-Wahab

    (Faculty of Engineering, International Islamic University Malaysia, P.O. Box 10, Kuala Lumpur 50728, Malaysia)

  • Noraini M. Noor

    (Faculty of Engineering, International Islamic University Malaysia, P.O. Box 10, Kuala Lumpur 50728, Malaysia)

Abstract

The present work describes a self-sustaining bioelectrochemical system that adopts simple cell configurations and operates in uncontrolled ambient surroundings. The microbial fuel cell (MFC) was comprised of white-rot fungus of Phanaerochaete chrysosporium fed with oil palm empty fruit bunch (EFB) as the substrate. This fungal strain degrades lignin by producing ligninolytic enzymes such as laccase, which demonstrates a specific affinity for oxygen as its electron acceptor. By simply pairing zinc and the air electrode in a membraneless, single-chamber, 250-mL enclosure, electricity could be harvested. The microbial zinc/air cell is capable of sustaining a 1 mA discharge current continuously for 44 days (i.e., discharge capacity of 1056 mAh). The role of the metabolic activities of P. chrysosporium on EFB towards the MFC’s performance is supported by linear sweep voltammetry measurement and scanning electron microscopy observations. The ability of the MFC to sustain its discharge for a prolonged duration despite the fungal microbes not being attached to the air electrode is attributed to the formation of a network of filamentous hyphae under the submerged culture. Further, gradual lignin decomposition by fungal inocula ensures a continuous supply of laccase enzyme and radical oxidants to the MFC. These factors promote a self-sustaining MFC devoid of any control features.

Suggested Citation

  • Asiah Sukri & Raihan Othman & Firdaus Abd-Wahab & Noraini M. Noor, 2021. "Self-Sustaining Bioelectrochemical Cell from Fungal Degradation of Lignin-Rich Agrowaste," Energies, MDPI, vol. 14(8), pages 1-11, April.
  • Handle: RePEc:gam:jeners:v:14:y:2021:i:8:p:2098-:d:533130
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    References listed on IDEAS

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    1. Lai, Chi-Yung & Wu, Chih-Hung & Meng, Chui-Ting & Lin, Chi-Wen, 2017. "Decolorization of azo dye and generation of electricity by microbial fuel cell with laccase-producing white-rot fungus on cathode," Applied Energy, Elsevier, vol. 188(C), pages 392-398.
    2. Wu, Chao & Liu, Xian-Wei & Li, Wen-Wei & Sheng, Guo-Ping & Zang, Guo-Long & Cheng, Yuan-Yuan & Shen, Nan & Yang, Yi-Pei & Yu, Han-Qing, 2012. "A white-rot fungus is used as a biocathode to improve electricity production of a microbial fuel cell," Applied Energy, Elsevier, vol. 98(C), pages 594-596.
    3. Hongjun Ni & Kaixuan Wang & Shuaishuai Lv & Xingxing Wang & Lu Zhuo & Jiaqiao Zhang, 2020. "Effects of Concentration Variations on the Performance and Microbial Community in Microbial Fuel Cell Using Swine Wastewater," Energies, MDPI, vol. 13(9), pages 1-11, May.
    4. Sami G. A. Flimban & Iqbal M. I. Ismail & Taeyoung Kim & Sang-Eun Oh, 2019. "Overview of Recent Advancements in the Microbial Fuel Cell from Fundamentals to Applications: Design, Major Elements, and Scalability," Energies, MDPI, vol. 12(17), pages 1-20, September.
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